[PHP] gd project question

2002-05-31 Thread Michael Geier
I have the following issue: I am making a gas guage based on a percentage. ie. - a 180 degree arc is created - the range will be 0 to n (undetermined ammount) - there will be x number of entries - the needle will

RE: [PHP] gd project question

2002-05-31 Thread Darren Gamble
4L4 (403) 781-4948 -Original Message- From: Michael Geier [mailto:[EMAIL PROTECTED]] Sent: Friday, May 31, 2002 9:18 AM To: Php-General Subject: [PHP] gd project question I have the following issue: I am making a gas guage based on a percentage. ie

RE: [PHP] gd project question

2002-05-31 Thread Michael Geier
: RE: [PHP] gd project question Good day, Wow, a high school math question. You should use asin() and acos() of the angle to get the y and x differentials, respectively. Multiply the result by the size of the needle. This assumes that your guage is oriented horizontally, and the needle

RE: [PHP] gd project question

2002-05-31 Thread Miguel Cruz
On Fri, 31 May 2002, Michael Geier wrote: my arc runs from 180 deg. to 360/0 degree, or left to right, pointing upwards (upside down U). i guess I am not getting my head around the numbers...is there anywhere on the net that has a good thorough description about a process like this?